Some creationist presentations include claims about "polystrate
fossils". The term, which is not a geological term, is used by
creationists to describe fossils that intersect several rock beds,
usually in sedimentary rocks. However, "polystrate" tree fossils were
not problematic for conventional geologists of the 19th century, nor
are they a problem for 20th century geologists.

As evidence for a global flood, some creationists and catastrophists
have pointed to the strange tale of a fossil whale from California
that was found buried "in a vertical position" and intersecting
several rock layers. Investigation of the tale revealed that it was
mostly false.